Improvement in the electro-deposition of nickel



. the importance of ash In the specification of :1

-tion of carbon.

ISAAC ADAMS,

UNITED STATE PATENT 0FFIcE.

JR., OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN THE ELECTRO-DEPOSITION OF NICKEL.

Specification forming part of Letters Patent No. 102,748, dated May 10, 1870.

To all whom it may concern: 7

Be it known that I, ISAAC ADAMS, Jr., of. Boston, in the State of lliassachusetts, have made a new and useful Improvement in the l llcctrodlepositionofNickel, of which the following is a specification:

It consists in the use of a nickel anode containing a small proportion of carbon, or of some ofthe other metals. It rests upon the l'act, which I have discovered, that the presence in a nickel anode otlca -bon, orot' some of q theother metals, prevents the formation upon the auodeot' peroxide of nickel, and the decomposition ot'the' solution.

In the specification of a patent granted to me for an improvement in the electro-deposition of nickel, August 3, 1869, I pointed outig nickel solutions under such conditions as to drog'en are developed upon the anode, and that there will be .a tendency to the formation of a peroxide of nickel upon the anode. These'circnmstanees indicate a decomposition of-the solution.

It is well known that it is very difficult to cast pure nickel; and that it is difficult, if not practically impossible, to form nickel plates, suitable for anodes, by hammering or rolling. patent granted to me for ineltin 25, 1869,): pointed g nickel, May

out the fact that nick-cl is rendered much more iusible-When combined with a small propor- I have since discoveredthe fact that carbon not only renders nickel fusible, but it counteracts the tendency of the solution to become decomposed. Taking advantage of these two facts, I am able to make prevent any decomposition which shall render it acid or alkaline. It the attempt is made-to deposit nickel by 1 means of an anode of pure nickel, it will be found, upon examination, that bubbles of 1| ypure nickel.

shall be stron nickel anodes,by castings, which are free from the evil above solutioin and the of nickel .on the I The decomposition of the fornmtion of the peroxide anode,

other metal or metalloid which will not be acted employed-in the battery under of the current of electricity. quired is, that the metal or metalloid employed the particular solution employed.

Carbon has this special advantage over many or all other substances that, the electrical conditions with her of solutions, it not with such fusibility to the nickel that it maybe readily cast into plates, and is, at the same time, the cheapest substance that can be used.

It will thus be while itsatisfics the greatest numall, it also gives nickel anodes, whether cast, rolled, or ham-' mered Into the proper form, and a plicat-ion 1n the particular case of I plates cast by the use ofcarbon. v v

I therefore claiin- 1. The combination, with nickel to be used foranodes, of a metal ormct-alloid electro-nega-' tive to the nickel in the solution employed,

2. A nickel anode combined with carbon, and cast in the required form.

The above specification of my said invention signed and witnessed, at London, this 1st day of February,-A'. l). 1870.

IsAAeAnAMs, JR.

Witnesses:

E. A. QUINTARD, R. C. CUTTING, 1

described attending the use of i may also be prevented by combining ,with the nickel a small proportion of somelike carbon, upon by the partieularliquid the influencc The condition reglyelectro-negative to the nickel.

seen that my invention has general character 1n use of certain elements in special ap- 

